diff --git a/coverage-reports/pom.xml b/coverage-reports/pom.xml
index 5e8ab371bd..c9d09102db 100644
--- a/coverage-reports/pom.xml
+++ b/coverage-reports/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>io.siddhi</groupId>
         <artifactId>siddhi</artifactId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/siddhi-annotations/pom.xml b/modules/siddhi-annotations/pom.xml
index 67faeba34b..bce8348712 100644
--- a/modules/siddhi-annotations/pom.xml
+++ b/modules/siddhi-annotations/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>io.siddhi</groupId>
         <artifactId>siddhi</artifactId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
         <relativePath>../..</relativePath>
     </parent>
 
diff --git a/modules/siddhi-core/pom.xml b/modules/siddhi-core/pom.xml
index 17662add6c..af02ded50e 100644
--- a/modules/siddhi-core/pom.xml
+++ b/modules/siddhi-core/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
         <relativePath>../../pom.xml</relativePath>
 
     </parent>
diff --git a/modules/siddhi-core/siddhi-core-doc-gen/pom.xml b/modules/siddhi-core/siddhi-core-doc-gen/pom.xml
index a790814f00..19f8d6ebfc 100644
--- a/modules/siddhi-core/siddhi-core-doc-gen/pom.xml
+++ b/modules/siddhi-core/siddhi-core-doc-gen/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
         <relativePath>../../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/siddhi-doc-gen/pom.xml b/modules/siddhi-doc-gen/pom.xml
index b23bc67d38..22d60d904a 100644
--- a/modules/siddhi-doc-gen/pom.xml
+++ b/modules/siddhi-doc-gen/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/siddhi-feature/pom.xml b/modules/siddhi-feature/pom.xml
index 84f34e08d7..16ac7d2a2d 100644
--- a/modules/siddhi-feature/pom.xml
+++ b/modules/siddhi-feature/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/siddhi-query-api/pom.xml b/modules/siddhi-query-api/pom.xml
index 4b594bb57f..ef480a9973 100644
--- a/modules/siddhi-query-api/pom.xml
+++ b/modules/siddhi-query-api/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/siddhi-query-compiler/pom.xml b/modules/siddhi-query-compiler/pom.xml
index 08f13022fb..4aa7210b35 100644
--- a/modules/siddhi-query-compiler/pom.xml
+++ b/modules/siddhi-query-compiler/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/siddhi-samples/performance-samples/pom.xml b/modules/siddhi-samples/performance-samples/pom.xml
index 5018cb26d2..652a7cca9f 100644
--- a/modules/siddhi-samples/performance-samples/pom.xml
+++ b/modules/siddhi-samples/performance-samples/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>io.siddhi</groupId>
         <artifactId>siddhi-samples</artifactId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>performance-samples</artifactId>
diff --git a/modules/siddhi-samples/pom.xml b/modules/siddhi-samples/pom.xml
index 3c17ee9426..a1206d1119 100644
--- a/modules/siddhi-samples/pom.xml
+++ b/modules/siddhi-samples/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/siddhi-samples/quick-start-samples/pom.xml b/modules/siddhi-samples/quick-start-samples/pom.xml
index 59d3ed7d52..2c889e7882 100644
--- a/modules/siddhi-samples/quick-start-samples/pom.xml
+++ b/modules/siddhi-samples/quick-start-samples/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>siddhi-samples</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/modules/siddhi-service/pom.xml b/modules/siddhi-service/pom.xml
index f0a812f4ab..b8f7d47aa8 100644
--- a/modules/siddhi-service/pom.xml
+++ b/modules/siddhi-service/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.10-SNAPSHOT</version>
+        <version>5.1.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/pom.xml b/pom.xml
index ae68da5092..a59232c35c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     <groupId>io.siddhi</groupId>
     <artifactId>siddhi</artifactId>
     <packaging>pom</packaging>
-    <version>5.1.10-SNAPSHOT</version>
+    <version>5.1.9</version>
     <name>Siddhi</name>
     <description>Siddhi, Stream Processing and Complex Event Processing Engine</description>
 
@@ -834,7 +834,7 @@
         <url>https://github.com/siddhi-io/siddhi.git</url>
         <developerConnection>scm:git:https://github.com/siddhi-io/siddhi.git</developerConnection>
         <connection>scm:git:https://github.com/siddhi-io/siddhi.git</connection>
-        <tag>HEAD</tag>
+        <tag>v5.1.9</tag>
     </scm>
 
     <repositories>